It would nice if the LINQ Provider would offer support for List<T>.TrueForAll(), Enumerable.All() or both so that something like the sample below would work out of the box:

class Post
{
string Title;
string Body;
List<string> Tags;
}

This SearchByTag is supposed to search for all Posts containing ALL the tags.

public List<Snip> SearchByTag(List<string> Tags, int PageSize, int
StartPage, int PageCount)
{
using (var db = ServiceLocator.Get<IMongo>())

{ var posts = db.GetCollection<Post>(); List<Post> result; int skip = StartPage*PageSize; int take = PageCount*PageSize; if (Tags != null && Tags.Count > 0) result = posts.AsQueryable().Where(x => Tags.All(x.Tags.Contains)).OrderByDescending(x => x.LastAccess).Skip(skip).Take(take).ToList(); else result = posts.AsQueryable().OrderByDescending(x => x.LastAccess).Skip(skip).Take(take).ToList(); return result; }